Round(9.x,0) Error where x >=5 and x <= 9)

The following statement select ROUND(9.5, 0) gives error:Msg 8115, Level 16, State 2, Line 1Arithmetic overflow error converting expression to data type numeric.at SQLExpress 2005 and SQLExpress2014 versions the same error for any number between 9.5 to 9.9999